Quantifying the Duration of the Corrosion Propagation Stage in Stainless Steel Reinforcement

Present durability projections for concrete reinforced with stainless steel (SS) are limited in that, while accounting for a substantial increase in the corrosion initiation stage (CIS) duration, credit tends not to be given for any added corrosion propagation stage (CPS) duration over that of carbon steel (CS). The objectives of this work were to: (1) develop a rational quantitative estimate of the duration of the corrosion propagation stage of concrete reinforced with SS in current and anticipated FDOT practice, establishing alternative corrosion monitoring methods if needed; (2) apply the findings as inputs to damage function models to determine how any resulting added durability credit can be used to optimize materials and design options. Experiments were performed to obtain estimates of corrosion rates, corrosion morphology, and the critical corrosion penetration. The results were then used to suggest a service limit state that accounted for the mechanical properties of the steel. The results were incorporated into durability projections to provide recommendations of concrete cover to be used based on service conditions.

• Record URL:
  https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/research/reports/fdot-bdv25-977-56-rpt.pdf?sfvrsn=4bb50c39_4
• 
• Summary URL:
  https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/research/reports/fdot-bdv25-977-56-sum.pdf
• Supplemental Notes:
  • Publication date on cover page is December 2020.
• Corporate Authors:

  University of South Florida, Tampa

  Department of Civil and Environmental Engineering, 4202 East Fowler Avenue
  Tampa, FL  United States  33620

  Florida Department of Transportation

  ,    
• Authors:
  • Orozco Martínez, Nelly S
  • Saire Yañez, Julio
  • Alexander, Christopher L
  • Mullins, Gray
• Publication Date: 2020-11-25

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 178p

Subject/Index Terms

• TRT Terms: Concrete structures; Corrosion; Corrosion resistance; Durability; Reinforced concrete; Service life; Stainless steel; Structural health monitoring
• Identifier Terms: Florida Department of Transportation
• Geographic Terms: Florida
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01768922
• Record Type: Publication
• Report/Paper Numbers: Project BDV25-977-56
• Contract Numbers: BDV25-977-56
• Files: TRIS, ATRI, STATEDOT
• Created Date: Mar 19 2021 11:39AM